Audio-Technica AT831R Bedienungsanleitung

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MINATURE CARDIOID CONDENSER MICROPHONE

FORM No. ATGC-L0131-07-E

Machida • Tokyo • Japan

SPECIFICATIONS

ELEMENT Fixed-change back plate permanently

polarized condenser

POLAR PATTERNCardioid

FREQUENCY RESPONSE40-16,000 Hz

OPEN CIRCUIT SENSITIVITY-42 dB (7.9 mV) re 1V at 1 Pa

IMPEDANCE 250 ohms

MAXIMUM INPUT SOUND LEVEL141 dB SPL, 1 kHz at 1% T.H.D.

LOW FREQUENCY ROLL-OFF80 Hz, 18 dB/octave

DYNAMIC RANGE (typical)112 dB, 1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO65 dB, 1 kHz at 1 Pa

PHANTOM POWER REQUIREMENTS11-52V DC, 2 mA typical

SWITCH Flat, roll-off

WEIGHT (less cable and accessories)

MICROPHONE

POWER MODULE

2.8 g

81 g

DIMENSIONS

MICROPHONE

POWER MODULE

25.0 mm - long, 10.2 mm - diameter

92.9 mm - long, 18.9 mm - diameter

OUTPUT CONNECTORIntegral 3-pin XLRM-type

CABLE 4.0 m long (permanently attached to

microphone), 3.2 mm diameter,

2-conductor, shielded cable with TA3F

output connector

ACCESSORIES FURNISHEDAT8538 power module;

AT8417 clothing clip;

AT8444 instrument adapter;

AT8116 windscreens;

protective carrying case

10 dB

20k10k5k2k1k50020010050

8 kHz

200 Hz

1 kHz

5 kHz

0°

330°

300°

270°

240°

210°

180°

150°

120°

90°

60°

30°

Polar Pattern

Frequency Response

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

Frequency in Hertz

LEGEND 12” or more on axis

Response in dB

Roll-off (MT830a)

- Clip-on lavalier mic provides crisp, full-sounding voice pickup

- Also excels as an instrument mic, especially for pickup of

acoustic guitar with included AT8444 instrument adapter

- Excellent gain before feedback and suppression of background

noise

- UniSteep® lter provides a steep low-frequency attenuation to

improve sound pickup without affecting voice quality

- Operates on phantom power only

For use as a lavalier, attach the microphone about six inches

below the chin. Anticipate movements that may cause the

microphone to rub against or be covered by clothing, and

position the microphone to avoid it.

The AT831R is intended for use in professional applications

where remote power is available. It requires 11 to 52V DC

phantom power, which may be provided by a mixer or console,

or by a separate, in-line source such as the Audio-Technica

AT8801 single-channel or CP8506 four-channel phantom power

supplies.

Output from the power module’s XLRM-type connector is low

impedance (Lo-Z) balanced. The signal appears across Pins

2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot” –

positive acoustic pressure produces positive voltage at Pin 2.

To avoid phase cancellation and poor sound, all mic cables

must be wired consistently: Pin 1-to-Pin 1, etc.

An integral 80 Hz high-pass UniSteep®filter provides easy

switching from a flat frequency response to a low-end roll-off.

The roll-off position reduces the microphone’s sensitivity to

popping in close vocal use. It also reduces the pickup of low-

frequency ambient noise (such as trafc, air-handling systems,

etc.), room reverberation and mechanically coupled vibrations.

The microphone is RoHS compliant–free from all substances

specied in the EU directive on hazardous substances.

Avoid leaving the microphone in the open sun or in areas where

temperatures exceed 43°C for extended periods. Extremely

high humidity should also be avoided.

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